Portion of a line trimmer



FIG. 1 is a perspective view of the design while in use.

FIG. 2 is a top view of the design shown in FIG. 1; and,

FIG. 3 is a side view of the design shown in FIG. 1.

The side view of the design opposite that illustrated in FIG. 3 is a mirror image of FIG. 3. The broken line showing of the environment is for illustrative purposes only and forms no part of the claimed design. The broken line which defines a boundaries of the claimed design forms no part thereof. 

We claim the ornamental design for a portion of a line trimmer, as shown and described. 